KEPCO BIT 4882F - Manual (Page 25)

BIT 4882 030507
3-5
3. Turn the BOP “ON” and program the BOP Power Supply to ZERO CURRENT and MAXI-
MUM VOLTAGE LIMIT.
• If using SCPI send
FUNC:MODE CURR;:CURR 0;VOLT MAX
• If using CIIL send
FNC DCS:CH1 CURR 0 with VLTL 20
4. Locate Io COMP AMP ZERO control R83 (see Figure 3-1, refer to Table 3-1).
5. Adjust control R83 for zero, per Table 3-2, OUTPUT CURRENT ZERO.
6. Turn the BOP Power Supply “OFF”.
3.9 ADJUSTMENT OF THE FULL SCALE OUTPUT CURRENT (R22)
1. With the BOP Power Supply “OFF”, connect the PRECISION 4-TERMINAL SHUNT to the
power supply output terminals and connect the DVM to the PRECISION 4-TERMINAL
SHUNT (see Figure 3-2)
2. Turn the BOP Power Supply “ON” and program the BOP Power Supply for PLUS FULL
SCALE CURRENT and MAXIMUM VOLTAGE LIMIT.
• If using SCPI send
FUNC:MODE CURR;:CURR MAX;VOLT MAX
• If using CIIL send
FNC DCS:CH1 CURR zz with VLTL 20
where
zz
is the maximum rated output current of the BOP.
3. Locate CURRENT FULL SCALE control R22 (see Figures 2-1 and 3-1, refer to Table 3-1).
4. MEASURE the output current using the DVM. Adjust control R22 as needed until DVM reads
exactly FULL SCALE CURRENT per Table 3-2, FULL SCALE CURRENT ACCURACY.
3.10 CURRENT READING ZERO CALIBRATION (R36)
NOTE: The Output Current Zero Adjustment (PAR. 3.8) must be done before performing the fol-
lowing procedure, and the PRECISION 4-TERMINAL SHUNT should be still connected
to the power supply output terminals.
1. Program the BOP Power Supply for ZERO CURRENT and MAXIMUM VOLTAGE LIMIT.
• If using SCPI send
FUNC:MODE CURR;:CURR 0;VOLT MAX
• If using CIIL send
FNC DCS:CH1 CURR 0 with VLTL 20
2. MEASURE the output current using programming commands, then check the readback
data.
• In SCPI send
MEAS:CURR?
then check the readback data.
• In CIIL: send
FNC DCS:CH1 GAL
F0
INX CURR
FTH CURR
NOTE: For subsequent measurements using CIIL it is only necessary to send
INX
CURR
and
FTH CURR
commands.
3. Locate CURRENT READBACK ZERO control R36 (see Figures 2-1 and 3-1, refer to Table
3-1).
4. Adjust control R36 until the readback value is not 0.0 using MEASURE commands (see step
2) as needed.